BEGIN:VCALENDAR
VERSION:2.0
PRODID:researchseminars.org
CALSCALE:GREGORIAN
X-WR-CALNAME:researchseminars.org
BEGIN:VEVENT
SUMMARY:Ari Shnidman (Hebrew University of Jerusalem)
DTSTART:20240514T203000Z
DTEND:20240514T213000Z
DTSTAMP:20260419T152650Z
UID:BC-MIT/12
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/BC-MIT/12/">
 Vanishing criteria for Ceresa cycles</a>\nby Ari Shnidman (Hebrew Universi
 ty of Jerusalem) as part of BC-MIT number theory seminar\n\nLecture held i
 n Maloney 560 at Boston College.\n\nAbstract\nThe Ceresa cycle of a curve 
 is perhaps the simplest example of a\nhomologically trivial algebraic cycl
 e which need not be algebraically\ntrivial. Its vanishing in the Chow (res
 p. Griffiths) group has various\nimplications\, but the locus of vanishing
  Ceresa cycles in $M_g$ is quite\nmysterious\, beyond the fact that it con
 tains the hyperelliptic locus. I'll\npresent new vanishing criteria for th
 e Ceresa cycle of curves with\nautomorphisms\, one of them conditional on 
 the Hodge conjecture. In certain\nlow genus cases the relevant Hodge conje
 cture is known\, and using this we\ndescribe the locus of Picard curves wi
 th vanishing Ceresa cycle. This is\njoint work with Jef Laga.\n
LOCATION:https://researchseminars.org/talk/BC-MIT/12/
END:VEVENT
END:VCALENDAR